Rio Tinto plc (RIO) announced that it plans to acquire the remaining stake in Riversdale Mining Limited. by exercising its right under section 661A (1) of the Australian Corporations Act. Currently, the company has a 99.76% stake in Riversdale through its wholly owned subsidiary Rio Tinto Jersey Holdings 2010 Limited. Recently, Indian Steel major Tata [...] (BHP) RIO Tinto Announced Plans to Acquire Riversdale Mining